Power-operated hammer



Jan. 19,1932. w. c. SPECK ET AL 1,341,650

POWER OPERATED HAMMER Original Filed June 29, 1927 0.0 DIEM] IDA a]lNVENTORS 5 1 ATTORNEYS Patented jani o, 1932 UNITED STATES PATENT.OFFICE WILLIAM o. srnox AND. EUGENE BARKER, oncoLuMBUs, OHIO, nssrenonsTO THE BUCKEYE STEEL cAs'rINGs COMPANY, or COLUMBUS, OHIO, A conronnrionor OHIO rownn-ornnnrnn HAMMER Original application filed June 29,1927,Serial No. 202,447. Divided and this application filed October 14; v

1929. Serial No. 399,681.

This invention relates to power-operated hammers, this application beinga division of our pending application Serial No. 202%?) filed June-29th,1927.

The object of my invention is to provide improved means foradjustablysupporting apower-operated hammer whereby the hammer may be adjustedboth vertically and horizontally in a quick and ready manner.

In the accompanying drawings:

Fig. 1 is an end elevation.

Fig. 2 is a longitudinal section.

Fig. 3 is a top plan view partly broke away. i

Fig. 4 is a section on the line 44 of Fig. 3.

Our improvements have been shown in connection with a hammer of thepneumatic type, although they are equally applicable to other types ofhammer. Referring to the drawings, a horizontally-arranged fluidpressure cylinder is indicated at 89, to the valve mechanism of whichair'is supplied through the pipe 89 leading from any suitable source ofsupply where it may be provided with a controlling valve not shown. 90represents the piston rod which is provided with an enlarged head 91.The cylinder is secured to a slide 92 by straps 93. The slide 92 isslidably mounted for horizontal movement upon a support 92, a screw 94threaded in the slide and held against axial movement by a yoke 95 beingemployed to adjust the slide and cylinder horizontally relatively to thesupport. The yoke is loosely mounted upon a pair of rods 96 projectingfrom the support and coil springs 97 are interposed between the yoke,the support and the heads of the rods to cushion the shock. The support92' is slidably mounted for vertical adjustment upon a pair of hollowstandards 98 and counter weights 99 located within the standards andconnected to the supports by cables 100 which pass over sheaves 101 areemployed to counterbalance the weight of the support and cylinder. Thevertical adjustment of the cylinder 89 is effected by a fluid pressurecylinder 102 whose piston rod 103 isconnected to the support and whichreceives air under pressure through pipes 104 leading to a suitablepoint of control, where they are support 106 being preferably connectedwith the support 107 for the standards 98 by the plates 108 and theupper ends ofthe'columns further connected by across member 109, so

as to lend rigidity to the structure.

The pneumatic hammer shown is one which has been particularly designedfor the purpose of cleaning large-sized castings, the castings beingsuspended between the piston and the anvil. The arrangement describedfurnishes a ready means for positioning the cylinder or" the hammer toadapt it to the castings to be cleaned by adjusting it horizontally bymeans of the screw 94 and vertically by the cylinder 102.

Having thus described our invention, we claim: I

1. In a device of the character described, a hammer mechanism, a movableslide to which said mechanism is connected, a stationary support forsaid slide, a screw having a threaded engagement with said slide toadjust the same on said support, a yoke to confine said screw againstaxial movement, rods projecting from said support upon which said yokeis slidably mounted, and buffer springs on said rod for said yoke.

2. In a device of the character described, a pair of spaced up-rights, asupport slidably mounted on said up-rights, a power hammer horizontallyarranged on said support, a fluid pressure cylinder beneath said supporthaving its piston connected therewith, and means for counterbalanoingthe weight of said support and hammer.

3. In a device of the character described, a pair of spaced hollowuprights, a support slidably mounted thereon, a power hammerhorizontally mounted on said support, a pair of counterbalanced weights,one in each up-' support slidably mounted on said uprights, a powerhammer horizontally mounted 011 said support, means for adjusting saidhammer horizontally, a weight in each hollow upright, sheaves on saidcross member, cables connecting the support and weights and passingabout said sheaves, and a fluid pressure v cylinder vertically disposedbeneath said support having its piston rod connected therewith.

5. In a device of the character described, a power hammer having ahorizontally arranged cylinder, a slide to which said cylinder isconnected, a support for said slide, a screw having a threadedengagement with said slide, a yoke to normally confine said scref iagainst axial movement, a pair of stationary rods upon which said yokeisslidably mounted, and a pair of confined coiled springs on each ofsaid rods, one spring on each side of said yoke. Y

6. In a device of the character described, a hammer mechanism, a slideto which said mechanism is connected, :1 support for said slide, a screwhaving) a threaded engagement with said slide,.a yieldahle yoke tonormally confine said screw against axial movement, and yieldable meansto normally confine the yoke against axial movement and cushion theshock of the hammer blows.

In testimony whereof, we have hereunto set our hands this 1st day ofOctober, 1929.

VILLIAM C. SPEOK. EUGENE BARKER.

